One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(17,18)(19,23)(20,21)(22,24) involution — undirected(1,3)(2,6)(4,7)(5,8)(9,10)(11,13)(12,15)(14,16)(18,21)(22,23) involution — undirected(1,3,5,8)(2,7,4,6)(9,11)(10,15)(12,14)(13,16)(17,18)(19,22)(20,21)(23,24)(3,8)(6,7)(10,16)(11,12)(17,19)(18,22)(20,24)(21,23) involution — undirected(1,3)(2,6)(4,7)(5,8)(9,12,14,11)(10,13,16,15)(1,4,5,2)(3,7,8,6)(9,13)(10,11)(12,16)(14,15)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.